Hi Luke, every Sales Invoice needs to have at least one “Item” line entry to be able to process - that is without going into customising the docType etc
This does not mean however that you have to create an Item itself, as you can simply type into the “Item Name” field the name of the item/service you are billing (no need to choose an Item from the Item box). You will need to enter data into the mandatory files like Description, Unit and price etc.
Using pre-created Items allows you to more easily add line items to your invoice without having to manually enter every time